KR20030055333A - Camera Supervised Motion Safety System - Google Patents

Abstract

A method and an apparatus in clamp protection systems (1-3) for doors and eventually existing footsteps (7) cooperating therewith, comprising a digital camera (4) at actual doors (1-3), which camera (4) is connected to a central computer (5) having a monitoring screen (5) to which also the ordinary opening and closing electronic means (6) are connected. Each camera transmits images at short intervals to the monitoring screen (5), each image is frequently compared with a reference image stored in the monitoring screen (5), and whereby alarm is given as soon as an image received from a camera (4) differs from the reference image of the monitoring screen (5), whereby the door (1-3) in question is opened or is maintained closed until the monitoring screen (5) observes that the received image coincides with the reference image.

Description

Camera Supervised Motion Safety System

TECHNICAL FIELD The present invention relates in particular to camera motion monitoring safety systems for doors and footsteps commonly used in transportation vehicles such as trains, trams, buses and ships. In addition, the present invention is used in swing doors, sliding doors, shutters, sliding roof valves, and the like, and is also used in real estate, platforms, and the like. A safety system for doors and scaffolding.

It is an object of the present invention that an accident can occur when a door or door is opened or closed unintentionally when a person or objects are in close proximity to the door, or when the door is opened. An accident such as a hinge or pinch between doors or a pinch at the rear end of a door, or a stepping on a door, moving up or down, falling out, or retreating back. Accidents that may occur when approaching the footrest, or moving together, when the door is opened or closed in an unacceptable position with the integrated footrest and the door, or when the footrest comes close to the footrest integrated with the door. It is to prevent.

Conventionally, there are mechanical or electronic clamp protection mechanisms currently commonly used to prevent doors, scaffolding and accidents that may occur by means of these scaffolds, which are installed on clamp ribs at the ends of the door, Or it is formed of a switch mechanism of the type to stop the operation of the inverter (inverts), it is formed of a switch mechanism of the type to stop the operation of the door from the opening and closing position when the clamp protection mechanism is in operation.

The clamp protection mechanism is also formed of an IR sensor or similar touch free senseor, which provides corresponding clamp protection. In addition, there are many other clamp protection mechanisms, such as the use of inductive transmitters to scan the operation of cog wheels or similar mechanisms, such that the movement of the cog wheels is a door plate. There is a clamp protection mechanism that initiates clamp protection when the leaf comes down slowly due to contact with an obstruction or bite.

First and foremost, conventional devices are designed so that a person or object is placed between the doors or between the door and the door frame or is not made to operate unless the person and object are in physical contact with the door and / or door frame. A person or object can be damaged or injured. Therefore, if such a conventional system fails in one bay, it can have very serious consequences.

The above known system is also not a comprehensive system with a system for monitoring, or detecting, the detection or retraction of footsteps of the kind used in buses, trains, trams and other means of transport in reality, Normally when an object or person enters or attempts to enter the door, it does not check normally, or the distance and / or height between the scaffold and the ramp, or the vehicle stops, tracks adjacent to where the vehicle is intended to stand. It is also impossible to check the distance from the ground plane regarding the bus platform.

Accordingly, there has been a need for a monitoring or supervising system that takes into account clamp protection systems. In other words,

When an object or person enters the door and when the door closes or when

Open vertically

Or on a railway or bus platform adjacent to the point where the vehicle should be stopped, or

Scaffolding or expelling of distance and / or height to the horizon

What is the length and / or height of expelling and is suitable for it?

Also, do not know if the scaffold is removed or moved down before the door opens.

Kneading

Check if the footstep does not retract before the door closes.

The present invention relates, in particular, to the safety system as described above, which includes monitoring only the contour of an object, and also includes camera monitoring of a digital camera technology type which has been implemented in a door or scaffolding system. That is, the present invention imparts a monitoring or supervision function or a monitoring function to the clamp protection mechanism for safety. For example, the function pursued by the present invention

There is no object or person entering or attempting to enter the door that is closed or opened.

Should

As long as the scaffold is cleared before the door is opened or the door is not closed sufficiently

Make sure the scaffold does not retreat.

Different distances or different heights between the vehicle and the platform about the horizon

The scaffold should be removed to an appropriate position, taking into account.

The scaffolding is how heavy or lightly unloaded the vehicle is and the platform

Or how high the marina is located,

You have to catch it.

Conventionally, German Patent 196 19 688 and European Patent EP 0 853 299 disclose a method for obtaining an image in an operation area using a video camera for comparison. Here, in a very short interval, the machine operates only when the image stored in the image processor is compared with the actual camera image, and also if the actual camera image is identical to the image stored in the image processor. Allow the function to be

All images have been studied and known in detail in conventional methods and apparatus, and thus a lot of data have been analyzed, but are difficult to apply and far from the apparatus of the present invention. In the present invention, safer monitoring is provided even with a smaller amount of analysis data. In the present invention, since there is no necessity to accumulate or store an image of a person as in the prior art, personal integrity is not affected. Furthermore, there is no need to always observe a person with one or more monitoring screens. It is only necessary when the alarm sounds. In addition, there is no risk of boring during monitoring or observation. There is very little human relevance and very few surveillance or observation costs.

The system of the present invention is much faster and cheaper than conventionally known systems because the system of the present invention uses fewer and less expensive system components.

The system monitors only the contours of objects or objects, indicating clearer image changes compared to conventional systems where a complete image must be monitored in detail, so that monitoring is possible even in small changes such as gray scale of the image. Make it possible. This is safer and more accurate than scanning only contours or profiles because the present invention clearly determines whether the scanned reference points are the same or not.

EP 0 852 313 discloses a door supervising system consisting of a CCD or video camera for monitoring the movement range of a sliding door, which is intended to detect the presence of obstacles in the movement path for the sliding door. It is supposed to be connected to an evaluation device having a microporcessor.

However, this known patent has the disadvantages described above.

The present invention utilizes the so-called "digital camera technology having automatic image treatment" of the same type as used in digital reading pens, wherein the digital reading pen is a text. It reads the outline of and sends this information to a computer for various types of image processing and other uses, so that a digital camera is used instead of a reading pen.

As such, the digital camera of the present invention scans only the observed or observed object or observed object or the contour of the observed person, and further observes the changes under the entire light conditions received from the digital camera and Registering changes. The camera thus operates faster, is safer and cheaper than that of conventional systems.

In the present invention, the small type or the small type camera used can be installed at a desired place. For example, the door and / or the stepping board can be installed at an angle on the door board and the stepping board so that changes in motion and / or light can be detected. Check when the door is opened or closed to see if there are any obstructions in the passageway leading to it or how the object or object is approaching the door leaf or the footrest. In such a system, this contour of a reference image or photograph showing the contour at the normal position is compared with the contour of each actual image or photograph obtained from the camera.

In other words, the actual image is analyzed at given time intervals, and in particular, the frequency of several images per second is analyzed and compared. Each image must be analyzed separately, thus indicating or finding out what is different from the reference image being cited, that is, whether there is an image difference. Also, from the above image, you can see where the door plate and the footrest are, respectively, and more closely control whether the shutter door is closer or the similar structure is closer to the platform while the footrest is near the platform or the footrest is removed. . This makes it possible to detect a state at a predetermined position, even a small object or object, before the door plate and / or the foot plate are locked.

By monitoring the camera or supervisioning the position of the door plate and the footboard of the type described above, a touch free clamp protection means is obtained.

If a person or object is placed between the door plates during the closing operation, it will momentarily check with one or more monitoring cameras, but the interlock door activator will stop or stop the movement of the door plates. You will see it move backwards in the opening direction.

This camera system is usually effective for the electronic control mechanism for the door, and in the end, it is also effective for the vehicle's footrest, thus providing a double control mechanism for safety. The camera system scans the contours of objects close to the door, giving safety and speed to the inspection of objects and determining what is the target. However, only shapes and operations close to the door may be considered. Conversely, there are no beep indications for objects parallel to or moving away from the door.

The system is applicable to many different types of doors. For example, doors such as sliding doors, slidable sliding doors, open shutters, scaffolds, expellable walking bridges or lamps and other types of supporting structures. Or a combination of a door and a footrest can be used efficiently.

This system is very useful and can also be used in rail cars without drivers or in vehicles with automatic steering. The system can also be used for both electric door opening mechanisms or scaffolding devices and for hydraulic and pneumatic devices.

The advantages of the new monitoring system are:

A system that monitors door closing and monitors contactless clamp protection.

This prevents the door plate from hitting any obstacle.

Allow the door to open automatically before there is a risk of clamping.

If anyone tries to enter the door during the closing operation,

All.

When the door is closed, when someone moves from or in parallel with the door

Allows you to track the movement.

The invention is described in detail in accordance with the accompanying drawings.

FIG. 1 shows that two single doors are shown at the left part and two unit doors are shown at the right side as a pair of right sliding twin sliding doors. According to the invention it is monitored by the instrument of the camera system.

FIG. 2 is a side view illustrating the installation of a monitoring camera to enable monitoring of both doors, scaffolds or ramps in three dimensions.

3 is an algorithm illustrating the functionality of the apparatus of the present invention.

1 shows a monitoring system according to the present invention. Here two separate doors and a pair of doors are monitored. It is of so-called sliding door type, and has two unit doors 1, 2 and one twin door.

The doors described above are arranged in interior doors or intermediate doors that are installed in trains, trams, bus ships and other transportation equipment and are installed in platforms, airports and many other places.

This monitoring system consists of a digital miniature monitoring camera 4, in particular a known type called "digital camera technology with an automatic image processing mechanism", and among others, it reads a pen and reads the contours of text. And the type used to transfer these information to a computer in digital form, and the disclosed embodiments comprise computer equipment having a monitoring screen 5 for different types of image processing and other uses.

Such a camera produces a large amount of images per unit of time, and squeezes a relatively large amount of images per second, each of which has a large number of dots (pixels). Is done.

The computer and monitoring screen 5 create an image and outline the person and object until the person or object is still or moving. Monitoring screen 5 also observes changes under light conditions, either the object or an adjacent equivalent.

In the example shown, a camera 4 of this type is installed at each upper edge of doors 1, 2, and 3, and all cameras are required for the driver or monitor of a train, bus or other vehicle, such as a conventional computer / monitoring screen 5. Install in another place. At the same time, the camera 4 can be connected to the normal door electronics for opening and closing the door.

The scope of the present invention is within the scope of the present invention as long as the vehicle driver or anyone can change the camera to observe the position of the door or the footrest when the door is to be monitored.

As shown in FIG. 2, the camera 4 can also be installed obliquely downward-outward from the inside at the upper edge of the door, so that the camera 4 can open the doors 1, 2, 3 and the state of the footrest or lamp 7. All can be supervised. These scaffolds or ramps are aligned to be folded or removed before the door is opened and retracted after the door is closed. The camera can also observe the position of the platform, or the position of the horizon below the door.

During monitoring, the camera has a field of at least some depth so that door movement and scaffold movement can be monitored, allowing cameras to be placed in different ways from project to project.

As shown in FIG. 3, monitoring is performed as follows.

(A) opening the door

When the vehicle is stopped or in a stationary door system, doors 1, 2 and 3 can be opened normally without the risk of an accident. In this case, doors 1, 2 and 3 are installed in the vehicle and consequently connected internally to the footrest 7 with functionality. It is very important that the scaffold is removed (folded) before the door opens. This eliminates the risk of passengers encountering too high stairs from a train or bus. When the door starts to open, Camera 4 will observe the position of Scaffold 4. If the scaffold is not sufficiently removed or folded, it immediately appears to be deviating or unreasonable in the comparison process, which is compared and performed using the reference image stored in the monitoring screen 5. Process.

A warning sound is attached to the monitoring screen 5, which is effective when the door is closed immediately. In this case, if something goes wrong, it creates a new monitoring system to check whether the scaffold is removed. If this is not done, the door will remain closed.

(B) Access shall be made through the open door without obstacles, unless the door begins to close.

(C) When doors 1, 2, and 3 are busy closing, camera 4 observes the doorway and continuously monitors the presence of scaffolding to the end, so that the camera changes the lighting, especially the overall lighting or door length. In comparing the target image and the camera image, when there is a discrepancy between the target image and the camera image, the supervision unit 5 checks the result.

At the same time as monitoring the doorway, the position monitoring of the footrest 7 takes place. If the scaffold starts to move, or if the scaffold must be retracted for some reason, a corresponding warning sound is given to the monitoring unit 5 so that the door is opened again. Importantly, a) the footrest 7 interlocks with doors 1, 2 and 3, b) the footrest is removed or folded before the door opens, c) the footrest 7 does not retract or fold until the door is closed. to be.

Major sign:

1. door 2. door 3. twin sliding door

4. Camera 5. Monitoring / Supervision Screen

6. Door electronics 7. Footstep, ramp

Claims (10)

The entry of people or objects in places such as sliding doors, sliding doors, shutters, slidable ceiling valves, real estate, and platforms, especially for doors and scaffolds, especially for trains, trams, buses and other transport equipment. When a person or object accidentally opens or closes when attempting to enter, the person or object falls off, is caught between doors or at the rear edge of the door, or when the footrest accidentally rises, falls, or retracts. When approaching or in operation with the scaffolding, the scaffolding and doors in which the scaffolding and the door are synchronized are not allowed in any position with respect to the opening and closing of the door, and a type of monitoring (monitoring) is called "digital camera technology with automatic image processing". ) Camera 4 is used, which reads (scans) the contour of the object and reads The beams are transferred to a monitoring (monitoring) computer 5 for different types of image processing and other uses, where the camera 4 is installed at an angle above the doors 1-3 and the camera and scaffolding monitoring. Operational safety systems and device protection methods Each camera 4 is connected to a central computer having a monitoring screen 5 where the normal door electronics 6 are opened and closed, The contour image from each camera 4 is frequently compared with a stationary reference image for each camera installation site, and this still image is stored in the monitoring screen 5, If the target contour image of the monitoring screen 5 is different from the contour image received from the camera 6, the alarm sounds immediately. Therefore, the door 1-3 has the monitor image 5 and the contour image received from the target image. How to protect the door and scaffolding clamp and safety system, characterized in that the door is opened or closed by judging whether they match The method of claim 1, wherein the monitoring camera delivers a plurality of images per unit of time, so that each transmitted image is compared with the target image of the monitoring camera, the protection of the clamping device and safety system for the door and scaffolding Way The door according to claim 1 or 2, characterized in that each of the cameras (4) scans the contours of the object or person to be observed and also changes the conditions of the observed object or person's state or ambient state. And foot clamp clamp protection device and safety system protection method 4. The camera according to claim 1, 2 or 3, wherein each camera 4 is located at the position of the doorway and the footrest 7 or the lamp of the door 1-3 or the distance or the ground to the adjacent platform. Distance to the door, the footrest 7 may also be removed or folded before the doors 1-3 are opened, or the footrest 7 may not be retracted or folded until the doors 1-3 are closed. Clamp protection device for doors and scaffolding and safety system protection method A device consisting of a computer having a monitoring (monitoring) unit for each door 1-3 and a monitoring screen 5 for carrying out the method according to any one of the preceding claims The monitoring unit at each door is a camera 4 of the " digital camera technology with automatic image processing " type, and the information obtained therefrom is monitored screens for different types of image processing and other uses. 5) Arrangement for delivery to the door, and also the camera 4 is secured to the door and scaffold clamp protection device and the safety system to be installed obliquely on each door (1-3) to be monitored The method according to claim 5, wherein the monitoring screen (5) is formed of a target image for each camera and its door, and each image received from the camera (4) is arranged to be compared with the target image of the monitoring screen (5), When the camera image and the monitoring target image is different from each other occurs, a warning sound is issued to maintain the closed position of the door or to adjust the door to be closed, characterized in that the door and scaffold clamp protection device And safety system protection devices 7. The camera (4) according to claim 5 or 6, wherein the camera (4) is adjusted to emit a plurality of images per unit of time to emit 6-20 images per second, and the monitoring screen (5) analyzes each received image, In addition, the door and scaffolding clamp protection device and the safety system protection device, characterized in that the alignment so as to compare with the target image stored in the monitoring screen 8. Door and footrest according to any one of claims 5 to 7, characterized in that each camera 4 is made to scan the contour of the monitored object or to scan for changes in light conditions. Clamp protection device and safety system protection device The device according to any one of claims 5 to 8, wherein the device is synchronized with the opening function of the door (1-3), and the position of both the doorway and the footrest or the lamp (7) is corresponding to the camera (4). Clamp protection device for door and scaffolding and safety system protection, characterized in that scanning by 10. The method according to any one of claims 5 to 9, characterized in that each camera (4) is associated with a conventional open / close electronics (6) with or without footrest 7 for each monitored door. Door and scaffolding clamp protection device and safety system protection device